Stability and breakdown of Fermi polarons in a strongly interacting Fermi-Bose mixture

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hdl:2117/361106
Document typeArticle
Defense date2021-05-01
PublisherAmerican Physical Society
Rights accessOpen Access
Abstract
We investigate the properties of a strongly interacting imbalanced mixture of bosonic 41K impurities immersed in a Fermi sea of ultracold 6 Li atoms. This enables us to explore the Fermi polaron scenario for large impurity concentrations including the case where they form a Bose-Einstein condensate. The system is characterized by means of radio-frequency injection spectroscopy and interspecies interactions are widely tunable by means of a well-characterized Feshbach resonance. We find that the energy of the Fermi polarons formed in the thermal
fraction of the impurity cloud remains rather insensitive to the impurity concentration, even as we approach
equal densities for both species
CitationFritsche, I. [et al.]. Stability and breakdown of Fermi polarons in a strongly interacting Fermi-Bose mixture. "Physical review A", 1 Maig 2021, vol. 103, núm. 53314, p. 53314-1-53314-15.
ISSN2469-9934
Publisher versionhttps://journals.aps.org/pra/abstract/10.1103/PhysRevA.103.053314
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